在当代世界宝石产地鉴定的科学领域,Dietmar Schwartz博士可谓是享誉世界。1981年,在德国美因茨大学获得博士学位后,他受德意志学术交流中心(DAAD)资助,先后在巴西欧鲁普雷图联邦大学(Federal University of Ouro Preto)和母校美因茨大...在当代世界宝石产地鉴定的科学领域,Dietmar Schwartz博士可谓是享誉世界。1981年,在德国美因茨大学获得博士学位后,他受德意志学术交流中心(DAAD)资助,先后在巴西欧鲁普雷图联邦大学(Federal University of Ouro Preto)和母校美因茨大学(Johannes Gutenberg University in Mainz/Germany)任教超过8年,之后进入古柏林实验室。展开更多
This paper is continuance of the paper[1]. A numerical calculation method of the Schwartz-Christoffel integral mapping the upper half plane onto the exterior of the polygon is discussed. The transformation formulas to...This paper is continuance of the paper[1]. A numerical calculation method of the Schwartz-Christoffel integral mapping the upper half plane onto the exterior of the polygon is discussed. The transformation formulas to deal with singular integral and the iteration equations to deal with the unknown parameters in the Schwartz-Christoffel integral are given. And this method is applied conformally to map the upper half plane onto the exterior of the polygon with the close cracks.展开更多
In this paper, a numerical calculation method of the Schwartz-Christoffel integral mapping the upper half plane onto the interior of the polygon is discussed. The unknown parameters in the Schwartz-Christoffel integra...In this paper, a numerical calculation method of the Schwartz-Christoffel integral mapping the upper half plane onto the interior of the polygon is discussed. The unknown parameters in the Schwartz-Christoffel integral are calculated by using the method in reference [1]. And this method is applied to conformally map the upper half plane onto the interior of the polygon with cracks. And then a practical example is shown.展开更多
The concept of multiplicity of solutions was developed in [1] which is based on the theory of energy operators in the Schwartz space S-(R) and some subspaces called energy spaces first defined in [2] and [3]. The main...The concept of multiplicity of solutions was developed in [1] which is based on the theory of energy operators in the Schwartz space S-(R) and some subspaces called energy spaces first defined in [2] and [3]. The main idea is to look for solutions of a given linear PDE in those subspaces. Here, this work extends previous developments in S-(Rm)?(m∈Z+) using the theory of Sobolev spaces. Furthermore, we also define the concept of Energy Parallax, which is the inclusion of additional solutions when varying the energy of a predefined system locally by taking into account additional smaller quantities. We show that it is equivalent to take into account solutions in other energy subspaces. To illustrate the theory, one of our examples is based on the variation of Electro Magnetic (EM) energy density within the skin depth of a conductive material, leading to take into account derivatives of EM evanescent waves, particular solutions of the wave equation. The last example is the derivation of the Woodward effect [4] with the variations of the EM energy density under strict assumptions in general relativity. It finally leads to a theoretical definition of an electromagnetic and gravitational (EMG) coupling.展开更多
文摘在当代世界宝石产地鉴定的科学领域,Dietmar Schwartz博士可谓是享誉世界。1981年,在德国美因茨大学获得博士学位后,他受德意志学术交流中心(DAAD)资助,先后在巴西欧鲁普雷图联邦大学(Federal University of Ouro Preto)和母校美因茨大学(Johannes Gutenberg University in Mainz/Germany)任教超过8年,之后进入古柏林实验室。
文摘This paper is continuance of the paper[1]. A numerical calculation method of the Schwartz-Christoffel integral mapping the upper half plane onto the exterior of the polygon is discussed. The transformation formulas to deal with singular integral and the iteration equations to deal with the unknown parameters in the Schwartz-Christoffel integral are given. And this method is applied conformally to map the upper half plane onto the exterior of the polygon with the close cracks.
文摘In this paper, a numerical calculation method of the Schwartz-Christoffel integral mapping the upper half plane onto the interior of the polygon is discussed. The unknown parameters in the Schwartz-Christoffel integral are calculated by using the method in reference [1]. And this method is applied to conformally map the upper half plane onto the interior of the polygon with cracks. And then a practical example is shown.
文摘The concept of multiplicity of solutions was developed in [1] which is based on the theory of energy operators in the Schwartz space S-(R) and some subspaces called energy spaces first defined in [2] and [3]. The main idea is to look for solutions of a given linear PDE in those subspaces. Here, this work extends previous developments in S-(Rm)?(m∈Z+) using the theory of Sobolev spaces. Furthermore, we also define the concept of Energy Parallax, which is the inclusion of additional solutions when varying the energy of a predefined system locally by taking into account additional smaller quantities. We show that it is equivalent to take into account solutions in other energy subspaces. To illustrate the theory, one of our examples is based on the variation of Electro Magnetic (EM) energy density within the skin depth of a conductive material, leading to take into account derivatives of EM evanescent waves, particular solutions of the wave equation. The last example is the derivation of the Woodward effect [4] with the variations of the EM energy density under strict assumptions in general relativity. It finally leads to a theoretical definition of an electromagnetic and gravitational (EMG) coupling.
